This standard covers electrically butt-welded, straight seam or spiral seam steel pipe, 6 in. (150 mm) and larger, for transmission and distribution of water, including fabrication of pipe, requirements of welding operations, permissible variations of weight and dimensions, preparation of ends, fabrication of specials, inspection, and test procedures. The major revisions made to the standard in this edition include the following: the format has been changed to AWWA standard style; the acceptance clause (Sec.I.C) has been revised to approved wording; Table 1 was revised to add ASTM A607/607M, grades 45 and 50, ASTMA907/907M, grades 30, 33, 36 and 40, ASTM A939/935M, grades 45 and 50, and ASTM A936/936M, grade 50. Also, a requirement for a minimum average Charpy V-Notch value of 25 lbf-ft (33.9 N-m) at 30 degrees F (-1 degree C) for steel plate under certain conditions was added; ASTM A635/A635M was added to Sec. 4.7.3; Sec. 4.11.2.1. was revised to include qualification of welding procedures; and the definition of P in Eq. 1 was revised.